The lips are one of the most visible parts of all human organs. They are highly susceptible to environmental effects such as wind, sun, smoking, and temperature extremes, because of their poor skin barrier function and low water retaining capacity. Large-scale population has identified lip lesions to be the most common oral mucosal lesions. The prime purpose of this book is to highlight the compilation of all spectrum of lip lesions which further help for the clinical diagnosis and treatment management.